Possible Clues:

• It's lowered before a joust
• Peak of a cap
• Front piece of a helmet
• Five is here or it may be an oversight
• Five is here, or it's up to your eyes, and over
• Front of a helmet
• This oversight, perhaps, gets it in for one who pays a call
• Gaffer deprived of super eye-shield
• Face guard; sun screen
• Moveable piece of helmet